Parse part of host name from controller

emdx71

Hi,
Still sorta new to coding so bear with me,

I'm trying to parse part of the hostname from the controller as a variable to use it to define settings for specific rooms later in code. I can get the full hostname by using hostname = ipaddress.hostname, and then from that I only need the last 6 characters. our host names are set up as BLDG-FLOOR-ROOM.xyz.com i just need the 'room' part of the name. i've tried using right_string or remove_string but they all come up as empty values in debug. any thoughts?

HARMAN_icraigie

I'd do a while through the string removing at the "-".

hostname = ipaddress.hostname
amx_log(AMX_ERROR,"'BEFORE hostname = ', hostname");

// Remove 'BLD-' and 'FLOOR-' prefix
while(find_string(hostname,'-',1))
{
remove_string(hostname,'-',1);
}

// Remove '.com' suffix
if(find_string(hostname,'.com',1))
{
set_length_string(hostname, length_string(hostname) - length_string('.com'));
}

amx_log(AMX_ERROR,"'AFTER hostname = ', hostname");

emdx71

Ian,

Where abouts would you put that in code? I tried calling it as a function, setting up an online event but it still comes up blank in debug.

Thanks

[Deleted User]

You mentioned a function - can you write a button event to call the function for testing purposes at runtime?

HARMAN_icraigie

@emdx71 said:
Ian,

Where abouts would you put that in code? I tried calling it as a function, setting up an online event but it still comes up blank in debug.

Thanks

Question - where are you setting your ipaddress.hostname variable from?

And yes it would best be found in a function

define_function char[255] parseHostName(hostName) 
{
  stack_var char tempString[255];

  tempString = hostName;

  amx_log(AMX_ERROR,"'BEFORE = ', hostName");

  // Remove 'BLD-' and 'FLOOR-' prefix
  while(find_string(tempString ,'-',1))
  {
    remove_string(tempString ,'-',1);
  }

  // Remove '.com' suffix
  if(find_string(tempString ,'.com',1))
  {
    set_length_string(tempString , length_string(tempString ) - length_string('.com'));
  }

  amx_log(AMX_ERROR,"'AFTER =  ', tempString ");

  return tempString;
}

emdx71

I just made a simple program with the example you posted, but its giving an illegal assignment statment at tempstring = hostname.

If i comment that out it will compile.

PROGRAM_NAME='Hostname Program'
(***********************************************************)
(* FILE CREATED ON: 06/04/2020 AT: 09:33:14 )
(***********************************************************)
(***********************************************************)
(***********************************************************)
( FILE_LAST_MODIFIED_ON: 06/04/2020 AT: 10:22:51 )
(***********************************************************)
( System Type : NetLinx )
(***********************************************************)
( REV HISTORY: )
(***********************************************************)
(
$History: $
)
(***********************************************************)
( DEVICE NUMBER DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_DEVICE
dvMaster = 0:1:0

(***********************************************************)
(* CONSTANT DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_CONSTANT

(***********************************************************)
(* DATA TYPE DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_TYPE

(***********************************************************)
(* VARIABLE DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_VARIABLE
IP_ADDRESS_STRUCT IPAddress
DNS_STRUCT DNSName
CHAR HOSTNAME[50] = 'IPAddress.HOSTNAME'
CHAR SUBNET[50] = 'DNSName.DomainName'

(***********************************************************)
(* LATCHING DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_LATCHING

(***********************************************************)
(* MUTUALLY EXCLUSIVE DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_MUTUALLY_EXCLUSIVE

(***********************************************************)
(* SUBROUTINE/FUNCTION DEFINITIONS GO BELOW )
(***********************************************************)
( EXAMPLE: DEFINE_FUNCTION () )
( EXAMPLE: DEFINE_CALL '' () *)

define_function char[255] parseHostName(hostName)
{
stack_var char tempString[254];

tempString = hostName

amx_log(AMX_ERROR,"'BEFORE = ', hostName");

// Remove 'BLD-' and 'FLOOR-' prefix
while(find_string(tempString ,'-',1))
{
remove_string(tempString ,'-',1);
}

// Remove '.com' suffix
if(find_string(tempString ,'.com',1))
{
set_length_string(tempString , length_string(tempString ) - length_string('.com'));
}

amx_log(AMX_ERROR,"'AFTER = ', tempString ");

return tempString;
}
(***********************************************************)
(* STARTUP CODE GOES BELOW *)
(***********************************************************)
DEFINE_START

(***********************************************************)
(* THE EVENTS GO BELOW *)
(***********************************************************)
DEFINE_EVENT

DATA_EVENT [dvMASTER]
{
ONLINE:
{
GET_IP_ADDRESS(dvMaster,IPAddress);
GET_DNS_LIST(dvMaster,DNSName);
parseHostName(hostname);
SUBNET = DNSName.DomainName;
HOSTNAME = IPAddress.HOSTNAME;
}

}

DEFINE_PROGRAM

HARMAN_icraigie

My bad - missed the data type for the parameter
parseHostName(char hostName[])